/*
   *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
   *                     taskit GmbH
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  #include <linux/mm.h>
  #include <linux/platform_device.h>
  #include <linux/gpio.h>
  #include <linux/w1-gpio.h>
  
  #include <asm/mach-types.h>
  #include <asm/mach/arch.h>
  
  #include <mach/at91sam9_smc.h>
  
  #include "at91_aic.h"
  #include "board.h"
  #include "sam9_smc.h"
  #include "generic.h"
  
  
  void __init stamp9g20_init_early(void)
  {
  	/* Initialize processor: 18.432 MHz crystal */
  	at91_initialize(18432000);
  }
  
  /*
   * NAND flash
   */
  static struct atmel_nand_data __initdata nand_data = {
  	.ale		= 21,
  	.cle		= 22,
  	.rdy_pin	= AT91_PIN_PC13,
  	.enable_pin	= AT91_PIN_PC14,
  	.bus_width_16	= 0,
  	.det_pin	= -EINVAL,
  	.ecc_mode	= NAND_ECC_SOFT,
  };
  
  static struct sam9_smc_config __initdata nand_smc_config = {
  	.ncs_read_setup		= 0,
  	.nrd_setup		= 2,
  	.ncs_write_setup	= 0,
  	.nwe_setup		= 2,
  
  	.ncs_read_pulse		= 4,
  	.nrd_pulse		= 4,
  	.ncs_write_pulse	= 4,
  	.nwe_pulse		= 4,
  
  	.read_cycle		= 7,
  	.write_cycle		= 7,
  
  	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
  	.tdf_cycles		= 3,
  };
  
  static void __init add_device_nand(void)
  {
  	/* configure chip-select 3 (NAND) */
  	sam9_smc_configure(0, 3, &nand_smc_config);
  
  	at91_add_device_nand(&nand_data);
  }
  
  
  /*
   * MCI (SD/MMC)
   * det_pin, wp_pin and vcc_pin are not connected
   */
  static struct mci_platform_data __initdata mmc_data = {
  	.slot[0] = {
  		.bus_width	= 4,
  		.detect_pin	= -1,
  		.wp_pin		= -1,
  	},
  };
  
  
  /*
   * USB Host port
   */
  static struct at91_usbh_data __initdata usbh_data = {
  	.ports		= 2,
  	.vbus_pin	= {-EINVAL, -EINVAL},
  	.overcurrent_pin= {-EINVAL, -EINVAL},
  };
  
  
  /*
   * USB Device port
   */
  static struct at91_udc_data __initdata portuxg20_udc_data = {
  	.vbus_pin	= AT91_PIN_PC7,
  	.pullup_pin	= -EINVAL,		/* pull-up driven by UDC */
  };
  
  static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
  	.vbus_pin	= AT91_PIN_PA22,
  	.pullup_pin	= -EINVAL,		/* pull-up driven by UDC */
  };
  
  
  /*
   * MACB Ethernet device
   */
  static struct macb_platform_data __initdata macb_data = {
  	.phy_irq_pin	= AT91_PIN_PA28,
  	.is_rmii	= 1,
  };
  
  
  /*
   * LEDs
   */
  static struct gpio_led portuxg20_leds[] = {
  	{
  		.name			= "LED2",
  		.gpio			= AT91_PIN_PC5,
  		.default_trigger	= "none",
  	}, {
  		.name			= "LED3",
  		.gpio			= AT91_PIN_PC4,
  		.default_trigger	= "none",
  	}, {
  		.name			= "LED4",
  		.gpio			= AT91_PIN_PC10,
  		.default_trigger	= "heartbeat",
  	}
  };
  
  static struct gpio_led stamp9g20evb_leds[] = {
  	{
  		.name			= "D8",
  		.gpio			= AT91_PIN_PB18,
  		.active_low		= 1,
  		.default_trigger	= "none",
  	}, {
  		.name			= "D9",
  		.gpio			= AT91_PIN_PB19,
  		.active_low		= 1,
  		.default_trigger	= "none",
  	}, {
  		.name			= "D10",
  		.gpio			= AT91_PIN_PB20,
  		.active_low		= 1,
  		.default_trigger	= "heartbeat",
  	}
  };
  
  
  /*
   * SPI devices
   */
  static struct spi_board_info portuxg20_spi_devices[] = {
  	{
  		.modalias	= "spidev",
  		.chip_select	= 0,
  		.max_speed_hz	= 1 * 1000 * 1000,
  		.bus_num	= 0,
  	}, {
  		.modalias	= "spidev",
  		.chip_select	= 0,
  		.max_speed_hz	= 1 * 1000 * 1000,
  		.bus_num	= 1,
  	},
  };
  
  
  /*
   * Dallas 1-Wire
   */
  static struct w1_gpio_platform_data w1_gpio_pdata = {
  	.pin		= AT91_PIN_PA29,
  	.is_open_drain	= 1,
  	.ext_pullup_enable_pin	= -EINVAL,
  };
  
  static struct platform_device w1_device = {
  	.name			= "w1-gpio",
  	.id			= -1,
  	.dev.platform_data	= &w1_gpio_pdata,
  };
  
  void add_w1(void)
  {
  	at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
  	at91_set_multi_drive(w1_gpio_pdata.pin, 1);
  	platform_device_register(&w1_device);
  }
  
  
  void __init stamp9g20_board_init(void)
  {
  	/* Serial */
  	/* DGBU on ttyS0. (Rx & Tx only) */
  	at91_register_uart(0, 0, 0);
  	at91_add_device_serial();
  	/* NAND */
  	add_device_nand();
  	/* MMC */
  	at91_add_device_mci(0, &mmc_data);
  	/* W1 */
  	add_w1();
  }
  
  static void __init portuxg20_board_init(void)
  {
  	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  	at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  						| ATMEL_UART_DTR | ATMEL_UART_DSR
  						| ATMEL_UART_DCD | ATMEL_UART_RI);
  
  	/* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
  	at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
  
  	/* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
  	at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | ATMEL_UART_RTS);
  
  	/* USART4 on ttyS5. (Rx, Tx only) */
  	at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
  
  	/* USART5 on ttyS6. (Rx, Tx only) */
  	at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
  	stamp9g20_board_init();
  	/* USB Host */
  	at91_add_device_usbh(&usbh_data);
  	/* USB Device */
  	at91_add_device_udc(&portuxg20_udc_data);
  	/* Ethernet */
  	at91_add_device_eth(&macb_data);
  	/* I2C */
  	at91_add_device_i2c(NULL, 0);
  	/* SPI */
  	at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
  	/* LEDs */
  	at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
  }
  
  static void __init stamp9g20evb_board_init(void)
  {
  	/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
  	at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
  						| ATMEL_UART_DTR | ATMEL_UART_DSR
  						| ATMEL_UART_DCD | ATMEL_UART_RI);
  	stamp9g20_board_init();
  	/* USB Host */
  	at91_add_device_usbh(&usbh_data);
  	/* USB Device */
  	at91_add_device_udc(&stamp9g20evb_udc_data);
  	/* Ethernet */
  	at91_add_device_eth(&macb_data);
  	/* I2C */
  	at91_add_device_i2c(NULL, 0);
  	/* LEDs */
  	at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
  }
  
  MACHINE_START(PORTUXG20, "taskit PortuxG20")
  	/* Maintainer: taskit GmbH */
  	.init_time	= at91sam926x_pit_init,
  	.map_io		= at91_map_io,
  	.handle_irq	= at91_aic_handle_irq,
  	.init_early	= stamp9g20_init_early,
  	.init_irq	= at91_init_irq_default,
  	.init_machine	= portuxg20_board_init,
  MACHINE_END
  
  MACHINE_START(STAMP9G20, "taskit Stamp9G20")
  	/* Maintainer: taskit GmbH */
  	.init_time	= at91sam926x_pit_init,
  	.map_io		= at91_map_io,
  	.handle_irq	= at91_aic_handle_irq,
  	.init_early	= stamp9g20_init_early,
  	.init_irq	= at91_init_irq_default,
  	.init_machine	= stamp9g20evb_board_init,
  MACHINE_END